Friction draft-gear.



E. W. NEWLL.

FRICTION DRAFT GEAR.

APPLICATION FILED ri. 24. I9I4.

Patented Dec. 28, 1915.

nw M uw, I. TI mw Ilm! Il T HI l. IIIH IIUIFII UMR WITN ESSES lil) ci? block message Applicaties filiaal To all whom t may concern:

Be it known that l, EDWARD "lli a citizen of the United Stilles, Pittsburgh, in lie couiiy of il State of Pennsylvania, have iure er?. iiew and useful improvements in Frici-io Drefb Gear, of which the following is a specification. This invention relates to fric-lilou gear oil the iype employed on railway cars for absorbing and dissipatirig' sli'oclis il c 1 draft and bulling stresses. Y

@ne object of my invention is to a friction draft gear which is compact, .l can-be manufacturer?. a, 'low cost.

Another objec; is to pic'vicle im improved friction draft gear having large oi' friction surface in a coiiiizieri Other objects alici advantages will be rip. parent in the following more detailed if scriptioii of ish@ invention.

ln'the accompanying drawing; Fi is vertical section of' a :fricion g'cer embodying my improveilents emi showing the parts in norma-l posiiion; 2 a similar View, showing llliewarts; iii glie positions assumed under :i buiiiig S'iress;t lilig. 5 2L transverse section on lie liiie @-4) of lFf.

l .'1 h l and Fig: 4f a transverse section. or. lane line AS shown in lle rffiwing, "the construe tion comprises che usual yoke Il connected to lie drew-oar 2 md surrounding, lle :fricsioir dell; gear elemeiis. Within lie Voire 1l.. are the usualiollowoi plaies 8 simil il and :irM ranged ro enga c the follower pla-te B 1s i casing 5 :having ii cenirally located cylindrical chamber coniziining ai rlreiil'. Spring 6. Secured io ii'lie easing 5 by bolts 7 iszi casting 8 iiiclosiiig Elie fricitioii bliicks of ille drzif gear., and said czisingis pfoiided Willi pairs ci opposi' ly inclined friciiori face-s 9 and 1.0 errangerl i opposite Sides or" the longitudinal axis ol iio'geag Said faces converging inwardly ro commori YWedge 'bloclsl meunier?. iii the gear on opposire sirles of long'i nel axis die gerrit mi vided with oppcfsiieli l2 :incl- S, ille oir" friction faces oli me mounted in the gear i irl .are lo have ilie riciioii eww engage lle corresponding fri@ Specification of Letters tent.

csrciioiijro Westfries "rriifiiifrrri, ccrircrmrioii ion feces lil-l0 of lie casting 8. Allfoab mg friction eleiiicii. isiiioimtecl in the space formeel. inleiiorly or the wedge blocks l1 sind preierzibltr comprises 'wo Wedge blocks leb-lll plee-eil beck to back and eich provided with, eppositely inclined friction faces adapted io engage corrsspomling; friction faces 13 of lie iioclrs l1.

The floating friction element irs made 0i' frio members so allow for adjustment oi? Elie pil-rigs in case the paris are inaccursif# inside or are cui; oi aiinement. @thercoiiid be made iii one pieceu ironiwerlge blocks l1ll. have 'their irai engagiiig the from 'follower i; plaie l@ kmay be iiilerposerl be l i inner el'irl c the drai; sirim; lle laaeral faces ci' rlic'rem Y n m nu ation, ig ii buiiiiig sii `as is :applied raw-bar 9;, iront follower'plei e ei'igagemenl or" the' friction faces lotion faces l@ of @he casing narrows lie space between om 'Weflge blocks lll-ll and Wedge blocks il reelrrire ear flo Tea? V-il' reen?` (lrziifa spring o, ille .sj-grin mereiir end b 'f clic casi ,fg 5 engagfollower plaise 3, which is lielcl staigioiiarjr v .si/'oies lfii release tbe pressurc'is reliever?. cn from follower l :incl this permiis @he drzii' spring; 'lao force lie Werlge blocks back to normal pcsiioii.

'Under rzif the action is quite similar excep; lizil lie move* curs are in the reverse direction sind lie sii'css is applied through the rezar follower 3 to the rail spring 6 and thence to ille friction ele- "will W be seen thai in action, tbc friction all Le wedge effeciive "no produce friction :is lie laerfil. faces' of lie Wenige blocks will also be noted the@ lie construeiioii is simule am@ liet friction elemencs are arm ari m a compact i'orm.

iii bilis increment bi' `islie usual g 'fil Q Licenze Having now described my invention,what- "tndinei aiiie of the gear, each wedge block I claim as new and desire to secure by Letf having4 oppositely inclined friction faces ters Pai/entf iszand cach pair of wedge blocks having the 45 x 1. n ,a friction draft gear, the combinay'friction faces convergingat the proximate tion with a draw-bar,=`of opposite pairs' of ends so that the inner friction faces of the wedge blocks each" having oppositely inwedge blocks form an inclosure, a floating 'clincd friction faces converging at the proxifriction element mounted within the inmate ends and thereby forming a central closure and provi'ded'with oppositely in 50 inclosure, a floating friction element mountclined friction faces'yadapted to enge e the ed in said inclosure and provided with opinner friction faces of the wedge bloc s, an positely inclined friction faces adapted to inclosing friction member having oppositely engage the inclosing friction faces of the inclined friction faces for engaging the wedge blocks, an integral casing inclosing outer friction faces ofthe Wedge blocks, the 55 the wedge blocks and having oppositely inwedge blocks at one end being in direct cnclined friction faces for engaging correr gagernent with one follower plate, and a sponding outer friction faces of the wedge draft spring interposed between the other blocks, and a spring for opposing the movefollower plate and the Wedge blocks at the ment of the Wedge blocks. y other end. 60 2. In a friction draft gear, the combina'- 4. lThe combinationwith a draft spring, tion with a. draw-bar, a yoke sdcured to the of a casing containing said spring, n pair draw-bar, and follower' plaltfes mounted of laterally disposed wedge blocks'monnted within the yoke at opposite ends, a paili1 of at one end of the spring, each wedge vblock wedge blocks on opposite sides of the lonhaving oppositely inclined friction faces f5 gitudinal axis of the gear, each wedge block converging outwardly from the spring, an'v having oppositely inclined friction faces 'inclosing friction member secured4 to sai and each pair of Wedge blocks having the casing and provided with friction faces for friction faces converging at the proximate engaginfr the` outer friction faces of said ends so that the inner friction faces of the wedge b ocks, la second pair of laterallyl dis- 70 wedge blocks form an inclosure, a fioating posed wedge blocks having.opposinely,in-`

l friction element mounted within the incloclined friction faces converging toward the vsure and provided with oppositely inclined draft spring and having the outer friction friction faces adapted'to engage the inner faces thereof in engagement with friction friction faces ofthe wedge blocks, the Wedge facesl on said friction meinber, and a fioat'- 75 blocks being movable in one direction by ing friction element provided with oppoi direct engagement with one follower plate, sitely inclined friction faces for engaging and a draft spring interposed betwn the` the inner friction faces of the wedge blocks. other follower plate and the wedge blocks. 'In testimony whereof l have hereunto set 3. In a friction draft gear, the combinainy hand. v tion with a' draw-bar, a yoke secured to the EDWARD W. NEWELL. draw-bar, and follower plates mounted Witnesses: y Within the yoke at opposite ends, a pair of A. M. Cnnirnnis,

f Wedge blocks on opposite vsides of thelongi S. Wn Kennen. 

